18084836 has 48 divisors (see below), whose sum is σ = 40061952. Its totient is φ = 6938400.

The previous prime is 18084799. The next prime is 18084851. The reversal of 18084836 is 63848081.

It is a super-2 number, since 2×18084836² = 654122586293792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18084836.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21455 + ... + 22281.

It is an arithmetic number, because the mean of its divisors is an integer number (834624).

Almost surely, 2^18084836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18084836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20030976).

18084836 is an abundant number, since it is smaller than the sum of its proper divisors (21977116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18084836 is a wasteful number, since it uses less digits than its factorization.

18084836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 18084836 is about 4252.6269528375. The cubic root of 18084836 is about 262.4852224485.

The spelling of 18084836 in words is "eighteen million, eighty-four thousand, eight hundred thirty-six".